Machine for making incisions in soles



April 1944- t F. E. BERTRAND I 2,347,247

MACHINE FOR MAKING INGISIONS IN SOLES 2 Sheets-Sheet l Fig. 5;

Fig.4. 0 250 Original Filed July 26, 1940 Fig T April 25, 1944. BERTRAND2,347,247

MACHINE FOR MAKING INCISIONS IN SOLES Original Filed July 26, 1940 ZSheets-Shet 2 Patented Apr. 25, 1944 333T AVAHQl- LB. E COPY MACHINE FORMAKING INCISIONS IN SOLES Frederic E. Bertrand, Lynn, Mass, assignor toUnited Shoe Machinery Corporation, Flemington, N. J., a corporationofNew Jersey Original application July 26, 1940, Serial No. 347,708.Divided and this application March 9, 1942, Serial No. 433,893

5 Claims.

This invention relates to machines for making incisions in soles and isherein histrated and described as embodied in a, knife a rangement forperforming this operation. In the manufacture of a certain type ofinsole which will be described later it is desirable to make not onlythe usual pair of scoring cuts which extend partially through thethickness of the sole material but also to make cuts which extendthrough the entire thickness of the sole to remove pieces therefrom. Theknife arrangement disclosed herein for making such incisions mayconveniently be used in the machine, disclosed in United States LettersPatent No. 2,302,738, granted November 24, 1942, upon an application ofwhich the present application is a division.

It is an object of the present invention to provide a knife arrangementcapable of performing operations ofthe character above described. Inaccordance with a feature of the invention, the illustrated deviceconsists of a pair of incising The knife arrangement disclosed hereinfor makward a sole supporting surface and having their blade portions insliding engagement with each other, one of the knives being positivelyconnected to the head to enable it to be forced through the entirethickness of the sole and the other knife being yieldably connected: tothe head to enable it to stop when it has cut partiallythrough thethickness ofthe sole. 'As shown herein the yieldably connected knife hasa single straight edge and is used to make an ordinary scoring cut andthe positively connected knife is L-shaped and serves to removeatriangularshaped piece of material from the rounded sole blank.

With the above and other features and objects in view, the inventionwill now be described in connection with the accompanyingdrawings andwill be pointed out in the claims.

In the drawings, Fig. 1 is a plan view of the flesh surface of aso-called Uni-channel insole after havng been operated upon by the knifearrangement which constitutes the subject matter of this invention;

Fig. 2 is an edge view of the sole shown in Fig. 1;

Fig. 3 is a side elevation partly in section showing the knifearrangement for performing the operation indicated in Fig. 1;

Fig. 4 is a section taken on v the line IV-IV of Fig. 3 showing theleft-hand knife assembly;

Fig. 4 is a, section taken on the line Iv -{V of Fig. 3 showing theright-hand knife assembly;

Fig. 5 is a bottom plan view of the knife arrangement shown in Figs. 3and 4; and

Fig. 6 is a side elevation of a machine provided with the improved knifearrangement.

To facilitate an understanding of the construction and arrangement ofthe illustrated device reference will first be made to the kind of workfor which it is adapted. It may be used, for example, to, performoperations on insoles of the so-called Uni-channel type disclosed inUnited States Letters Patent No. 2,146,814 granted February 4, 1939,upon the application of James P. Fredericksen. The heel end of, such aninsole S is shown in Figs. 1 and 2. This insole is prepared by firstrounding a sole blank to a shape having a heel portion of normal outlineand a forepart extending beyond the normal outline. The normal outlineis indicated by the line 454 and the outline of the extended forepart bythe line 459, the latter outline merging into the former along inclinedlines 460 extending rearwardly from ap-- proximately the heel-breastline. Ordinarily the insole is then channeled by forming a slitextending inwardly from the edge around the extended forepart, the depthof this slit beingindi-- cated by the line 458. The feather of theinsole, istrimmed to the normal outlinev 454, leaving an extendinglip456 which, is later folded back upon itself to form an upstanding rib.When the. lip. is thus folded the outer edge of the lip will coincidesubstantially with the normal outline of the insole. The. trimming ofthe feather may be performed simultaneously with the channelingoperation. It will be observed that a lip thus formed, and consequentlytherib formed by folding thelip back upon itself, will not terminatesquarely in the vicinity of theheel-breast line.

The illustrated knife arrangement presently to be described may be usedfor the purpose of incising these Uni-channel insoles in such a manheras to cause theribs to terminate squarely. The-operation is performedbefore the channeling of the sole and the trimming of the feather, andconsists, in part, in making a pair of transverse straight cuts- 256 and298 similar to the scoring cuts usually made to define the terminationsof the channellips of the ordinary double lipped insole. The cuts 296and 298 are made equal tothe thickness of the lip-to be formed. Theoperation consists also in cutting through the entire thickness of thesole to remove the triangular pieces.

having the inclined edges 460.

For making the transverse, straight cuts 293 and 298 at the respectiveedges of the Uni-channel insole, the illustrated device is provided witha pair of straight edged knives 462. The arrangements for mounting theknives 462 are shown in Figs. 3 and 4 Only the right-hand knife 462 andits carrier blocks appear in front elevation, being shown in Fig. 4 theshowing of the corresponding lefthand members having been omitted inFig. 4 in order to avoid obscuring other parts to be described later.

Each knife 462 has a shank portion which is slidable for heightwiseadjustment in a vertical dovetail guideway formed in a block 566 havingan under surface 56I (Fig. 4*) for bearing upon the sole to gage thedepth of the cut. The block 566 is split vertically along the guidewayand is provided with a clamping screw 562 which urges the two sectionsof the block together to hold the knife 462 in its adjusted position.The block 566 is provided with a dovetail for sliding engagement with aguideway formed in a block 564 and extending forwardly and rearwardly ofthe machine. The block 564 is split along its guideway and is providedwith a clamping screw 566 for holding the block 566 in adjustedposition. The block 564 is provided with a dovetail for slidingengagement With a transverse guideway formed in a split block 566. Aclamping screw 5"] urges the two sections of the block 566 together toclamp the block 564 inadjusted position. Extending upwardly from theblock 568 is a stem 5 I 2.

' The stem 512 is slidably received within a bore 3 l 6 formed in acylindrical swivel block 248 which is freely rotatable in a cylindricalbearing 246. Housed within the bore M6 and interposed between the innerend of the bore and the upper end of the stem 5l2 is a compressionspring 3|8 which urges the stem 5l2 downwardly. Such downward movementof the stem 5 l 2 is limited by the engagement of a screw 326 extendingradially from the stem 512 and engageable with the lower end of a slot322 formed in the swivel block 248 end of a slot 322 formed in theswivel block 248. The screw 326 also engages the sides of the slot 322to prevent relative rotation of the stem 5l2 within the bore 3l6. A pin263 secured in the bearing 246 is positioned between two spaced lugs 265on the swivel block 246 to prevent excessive free rotation of the swivelblock, leaving the swivel block free, however, to rotate to an extentrequired by gages later to be described.

Each of the knives 462 is carried by its own swivel block 246. Theconnections between each knife and its swivel block are similar, the twoknives and their carriers being symmetrically arranged in respect to acommon center line.

For cutting off the triangular pieces having the inclined edges 466,there are provided a pair of knives 464 associated with the respectiveknives 462 and having L-shaped cutting edges. Each knife 464 has one ofthe branches of the L of its cutting edge substantially in line with theedge of its associated knife 462 with the adjacent blade portions of theassociated knives in relative sliding contact with each other. Therearwardly extending branch of the L must register with the normal edgeof the sole, and this is accomplished by an arrangement, which will bereferred to later, for gaging and aligning the knives with relation tothe edges of the sole. In order more clearly to show the mountingarrangements for the knives 464, the lower portion of the lefthandswivel block 248 is shown in Fig. 4 as it would appear in a sectiontaken rearwardly of the stem 5l2. The left-hand knife 464 and itscarrier blocks are thus left unobscured by the left-hand knife 462 andits carrier blocks. Each knife 464 has a shank portion 465 extendingupwardly from the branch of the L which is in line with the edge of theknife 462. This shank constitutes a dovetail slide to provide forheightwise adjustment in a vertical guideway formed in a block 466. Suchadjustment is facilitated by a screw 468 threaded into the block 466 andhaving a downwardly extending head against which the blunt upper edge ofthe other branch of the L is urged into contact in making theadjustment. The screw 468 serves also to transmit a thrust directly tothe cutting edge beneath it. The block 466 is partially split in theusualway and the two sections of the block are urged together by aclamping screw 416 to hold the slide in adjusted position. The block 466is provided with a dovetail 412 which engages a horizontal guidewayextending forwardly and rearwardly of the machine and formed in theunder surface of a block 414. The block 466 may be secured in any:desired position of adjustment in the block 414,, which is split along.its guideway, by means of a clamping screw 476 which urges together thetwo sections of the block 414. A dovetail extending from the block 414slidably engages a transverse guideway formed in a block 418 which isrigidly secured to the under surface of the plate-like extension 258,266 of the left-hand swivel block 248. The block 478 is split along itsguideway and is provided with a clampingscrew 486 for; binding the twosections of the block against the dovetail to hold the block 414 in anadjusted position. It will be understood that each knife 464 isconnected to its associated swivel block 248 in the same way and thatthe various connecting elements above described in the singular areprovided in duplicate for the representative knives, the rightandleft-hand units being symmetrical with respect to the same center lineabout which the rightand left-hand knives 462 also are symmetrical.

The adjustment of the blocks 466 and 566 forwardly and rearwardly of themachine should be such as to bring the adjacent blade faces of theirrespective knives into sliding contact as above described. Thefore-and-rear adjustment, and also the lateral adjustment, of eachL-knife should be such as to bring the vertex of the L in line with theaxis of its swivel block 248. A work table 56, upon which the solerests, is provided with a brass insert 482 against which the knife 464strikes in completing its cutting stroke. It is evident that with thisarrangement of knives the knife 462 which is backed yieldingly by thespring 3|8 Will cut as deeply as permitted by the gaging surface 56! ofthe block 566. The knife 462 should be adjusted heightwise in the block566 to bring its cutting edge just low enough to cut through thethickness of the lip 456 subsequently to be formed without cuttingfurther into the body portion of the sole. The knife 464, however, beingpositively connected to the head 64 so far as downward movementis-concerned will partake of the full downward movement and shouldaccordingly be adjusted heightwise in the block 466 to bring its cuttingedge into engagement with the brass insert 482 when the head 64 occupiesits lowermost position. The insert 482 may carry a pair of dies M8 forproducing, under pressure of the gaging surfaces 56L a pair of lines ofindentations 4|9 extending laterally on the grain surface of the sole toindicate the positions where the channel lip terminates on.

ing and alining th knife assemblies with relation to the sole S theleft-hand swivel block 248 is provided with a forward gage 52 and a reargage 54, while the right-hand swivel block 248 is provided with aforward gage 55 and a rear gage 58. The forward gage 52 is carried by aforward portion 260 of a plate-like member which is integral with theswivel block 248, while the rear gage 54 is carried by a rearwardlyextending portion 258 of the same plate-like.

member. Each gage consists of a cylindrical barrel 218 which slidablyretains a downwardly spring-pressed work engaging member 284 (Fig. 3).The lower ends of the work engaging members 284 slide along the surfaceof the work table 50. The gages 56 and 58 of the right-hand swivel block248 are similar to the gages 52 and 54 and are similarly secured totheir swivel block. It is evident that each pair of gages when urgedinto contact with the edge of the sole S will position its knifeassembly laterally in proper relation to the sole because of the factthat the slide 200 which carries the swivel block is free to movetransversely in its guideway. It is also evident that the two gagesserve to aline their knife assembly in relation to the edge of the solebecause of the fact that the swivel block is free to turn in its bearing246. A mechanism having arms 262 for moving the gages of each knifeassembly into gaging relation with the sole S to position the sole andalso to gage the knife assemblies is disclosed and claimed in theabove-mentioned Letters Patent, No. 2,302,738.

The sole, after having been positioned by the gages, may be clamped uponthe work table 50 by a presser 444 (Fig. 5) carried by the head 64. Anindenting tool 451 (Fig. 5) is secured upon the presser 444 by a screw445 and serves to mark a line of indentations 453 (Fig. l) on the fleshsurface of the sole to indicate the position of the heel-breast line.The presser also cooperates with suitable dies set into the work table50 to impress size marks upon the grain surface of the sole.

A mechanism for urging the head 64 downwardly to cause the knives andthe presser 444 to perform their operations is disclosed and claimed inthe above-mentioned Letters Patent, No. 2,302,- 738. As shown in Fig. 6,this mechanism comprises a toggle link 18 pivotally connected at itslower end by a pin to the head 64 and pivotally connected at its upperend by a pin 88 to the lower end of a toggle link 82. The upper end ofthe link 82 is pivotally mounted upon a pin 84. This toggle mechanism isoperated by a link 88 pivotally mounted at its right-hand end upon thepin 8!! and pivotally connected at its left-hand end to a bell crank 9&1fulcrumed upon a stationary pin 92. An arm of the bell crank carries acam roll 94 which engages a groove 96 in a rotary cam 98 mounted on ashaft I08. Rotation of the shaft lllfl may be effected through anysuitable clutch mechanism from any desired source of power. The head 64is guided for up and down movement in suitable ways (not shown) in theframe of the machine. It is evident that movement of the link 88 to theleftwill tend to straighten the toggle, thereby urging the head 64downwardly to cause the knives to perform their cutting stroke. a

' Having described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine for incising: insoles, a work table having asole-supporting surface, a head movable toward said sole-supportingsurface, a pair of knives on said head having their edges disposed tocut into an insole on the work table upon movement of the head towardthe solesupporting surface, said knives having blade portions in slidingengagement with each other, a positive connection between the head andone of said knives, and a connection between the head and the otherknife constructed and arranged to enable that knife to yield as the headurges it into the sole.

2. In a machine for incising insoles, a work table having asole-supporting surface, a head movable toward said sole-supportingsurface, a pair of knives on said head having their edges disposed tocut into an insole on the work table upon movement of the head towardthe solesupporting surface, said knives having blade portions in slidingengagement with each other and also having their edges arranged to makea portion of the cut of one knife coincide with a portion of the cut ofthe other knife, a positive connection between the head and one of saidknives, a resilient connection between the head and the other knife, anda gage for stopping said resiliently-connected knife by engagement withthe face of the sole to limit the depth of the out made by that knife,the resilient connection thereupon yielding to permit further operativemovement of the head.

3. In a machine for incising insoles having a normal heel outline and anextended forepart outline, a work table having a sole-supportingsurface, a head movable toward said sole-supporting surface, a knifehaving an L-shaped cutting edge for cutting off squarely an end of thatportion of the sole which extends beyond the normal outline, a knifehaving a straight edge for making a transverse out extending only partway through the sole material, and means for mounting said knives onsaid head with the straight edge substantially in line with one of theedges of the L.

4. In a machine for incising insoles having a normal heel outline and anextended forepart outline, a work table'having a sole-supportingsurface, a head movable toward said sole-supporting surface, a knifehaving an L-shaped cutting edge for cutting off squarely an end of thatportion of the sole which extends beyond the normal outline, a knifehaving a straight edge for making a transverse cut extending only partway through the sole material, and means for mounting said knives onsaid head with the straight edge substantially in line with one of theedges of the L and with the blade portions of the knives substantiallyin face-to-face contact, said mounting means being constructed andarranged to enable the L-shaped knife to advance more closely to saidwork-supporting surface than the straight knife.

5. In a machine for incising insoles having a normal heel outline and anextended 'forepart outline, a work table having a sole-supporting thatknife from cutting beyond a predetermined depth into the sole materialwhile the head continues the operative movement of the L-shaped knife,said resilient connection yielding to permit said further operativemovement, the straight edge being substantially in line with one of theedge portions of the L and the corresponding blade portions of theknives being in sliding face-to-face contact.

FREDERIC E. BERTRAND.

CERTIFICATE OF CORRECTION.

Patent No. 2,5h7,2h7. April 25, 19th.

FREDERIC E. BERTRAND.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 1,first column, lines 22 and 25, for "The knife arrangement disclosedherein for makward" read -knives mounted on ahead which is movabletoward"; andthat the said Letters Patent should be read with. thiscorrection therein that the same may conform to the record of the casein the Patent Office.

Signed and sealed this 27th day of June, A. D. 19%.

Leslie Frazer (Seal) Acting Commissioner of Patents.

